Combustion-promoting device for internal-combustion engines



COMBUSTION FRQMOTING DEVICE FOR INTERNAL CQMBUSTION ENGINES Filed Feb.9, 1922 2 sh'eetsheet 1 G.P.ALLEN Magi 2?' y Filed Feb. 9, 1922 2snwwfsheez 2 Patented May 27, 192,4.

GEORGE P. ALLEN, 0F LOS NGELES, CALIFORNIA.

GOHBUSTION-PBHOTING DEVICE FOR'I INTERNAL-COMBUSTION ENGINES.

Application led February 9, 1922. Serial No. 535,199.

To all whom t may concern.'

Be it known that I, GEORGE P. ALLEN, a citizen of the United States,residing at Los Angeles, inthe county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Combustion-Promoting Devices for Internal-Combustion Engines, of which thefollowing 4is a specification.

My invention relates to internal combustion engines for motor vehicles,and a purpose of my invention'is the rovision of an attachment forinternal com ustion engines by means of which additional passageways areprovided for increasing the supply of combustible mixtures other thanthat provided by the usual intake manifold, such mixtures being of thesame or different character than that supplied from the en' ginescarburetor whereby, the general etliciency of an engine to which theattachment is lapplied is greatly increased.

bustible mixtures supplied to the engine both by the attachment and theengines carburetor vwhich also tendsto increase the power and efliciencyof an engine.

I will describe one form of engine and one formof attachment embodyinmy-invention and will then point out t e novel features thereof inclaims'.

In the accompanying drawings,

Figure 1 is a view showing in side elevation one form of internalcombustion engine and one `form of attachment embodying my invention,with portions thereof broken away to reveal parts not otherwisedisclosed.

Fig.' 2 is a fragmentary top plan view partly in section of the engineand attachment shown in Fig. 1.

Fig. 3 is a view showing the engine and attachment in front endelevation with portions thereof partly in section.

Referring specifically to the drawings in which similar referencecharacters refer to similar parts, my invention is shown applied to aninternal combustion engine lof standard construction and including acylinder block B, a cylinder head I-I having the usual spark plugopenings P, a1 carburetor K, and an intake manifold M. The passage -o'fgas from the carburetor to the intake mamfold is controlled bfy throttlevalve V provided' with an operating arm A invention further providesnovel andy more effective means for igniting the com-` connected to thethrottle lever in the usual manner, as will be understood.

rlfhe attachment forming the subject matter ofmy invention comprises inthe present instance a subsidiary manigold M' consisting of an uppersection 15 and a lower section 16,- the latter being inserted in theusual joint provided between the carburetor K and the intake manifold Mso as to be in communication with the carburetor. The` section 16 isprovided with a throttle valvel V to the stem of which is connected aspring 17 for normally urging the valve to closed position. Anotherspring 18 is connected to the stem of the valve V and to the arm A, thisspring serving to provide an `operative connection between the valvesVa'nd V so as to cause the latter to be operated simultaneously with theformer. For the purpose of admitting air to the manifold M, a valve V2is provided in the section 16 at a point beyond the throttle valve V',and this valve is normally urged to closed position by means of a sprin19. The stem 20 of the valve V2 is operatively connected to the usualspark rod 21 by means of a wire 22 which 1s trained around' the rod inthe manner clearly shown in Fig. 3 so that when the rod is rotatedanactua tion of the yalve is eiected.

The upper end of themanifold M is provided with a T 23 which isdetachably c0nnected to branch pipes 24 and 24a having vertical pipeextensions 25 and 258L respectively ythat are also detachably associatedwith the branch pipes. The pipe extensions 25 and 25" are internallyformed with valve seats 26 including' sleeves 27 in which the stems 28of valves Va are slidably fitted. Springs 29 surround the valve stems 28above the sleeves 27 for normally urging the valves to closed positionto prevent the assage of gaseous vapors from the mani old M through thepipe extensions. As clearly connected to an operating rod ,R which isshown in Fig. 1, the pipe extensions 25 and 25". are threadedly ttedwithin the spark plug openings P so that the manifold M may be said tobe in communication with the upper end of the cylinders of the internalcombustion engines, that is, when the G of standard form and in suchmanner that the termina-ls of the plugs are disposed in the path ofmovement of the gaseous vapors as they pass through the pipe extensionsthereby utilizing the vapors in effecting a scavenging' of theterminals.

ln operation, the pistons of the engine not only operate to create asuction within the usual manifold M but also in the subsidiary manifoldM so that the combustible mixture emanating from the carburetor K isconveyed to the branch pipes 24: and 24C. The suction created within thepipe sections 25and 25a is sucient to overcome' the tension of thesprings 29 and ythereby open the valves V3, whereby the admission of thecombustible mixture to the upper ends of the cylinders is eected andsimultaneously with the admission of the mixture to the sides of thecylinders through the manifold M. rlhe supply of current of the sparkplugs Gr occurs in the usual manner so that the ignition of thecombustible mixture within the respective cylinders takes place in theproper sequence. During the ignition of the mixture, the valves V3 arenaturally closed thus disconnecting the manifold M from the cylinders inthe same manner as the usual intake valves of an internal combustionengine.

From the foregoing operation taken in conjunction with the accompanyingdrawings, it will be manifest that the attachment provides additionalmeans for supplying a combustible mixture to the cylinders of an engineat points other than through the usual intake valves, thereby greatlyincreasing the power and efficiency of the engine. lt-is clear that theattachment may be associated with any standard form of internalcombustion engine without in any way modifying the construction of thelatter, and that when in applied position it provides an additional areafor the passage of the combustible mixture from the carburetor to thecylinders of the engine which serves to materially increase the power ofthe engine particularly when the engine is working under a heavy load.

'lhe valve V2 serves to supply additional air to the manifold M as thespark of the engine is advanced, and this additional air supplyobviously increases the combusti-.

ble properties of the combustible mixture traversing the manifold M andwhich is of course ultimately admitted to thecylinders of the engine.

Although ll have specifically shown and described the attachment asproviding a subsidiarymeans for conducting the combustible minture tothe cylinders of the engine from the usual carburetor, it is to beunderstood that the manifold M' can be connected to another source ofcombustible mixture supply to conduct such mixture to the cylinders of`the engine, and that this mixture can be of the same or of a differentcharacter than the mixture emanating from the carburetor K.

What ll claim is:

1. lin combination, an internal combustion engine having spark plugopenings in the cylinder head, a carburetor, an intake manifold, asubsidiary intake manifold connected between the carburetor and theintake manifold, valve means for connecting the subsidiary intakemanifold to the sparlr plug openings, ignition means carried by the lastmeans, a throttle valve for controlling the passage of duid from thecarburetor to the intake manifold, a second throttle valve in thesubsidiary intake manifold, and means operativel connecting the twothrottle valves for e ecting simultaneous operation of the two.

2. lin combination, an internal combustion engine having spark plugopenings in the cylinder head, a carburetor, an intake manifold, asubsidiary intake manifold connected between the carburetor and theintake manifold, valve means for connecting the subsidiary intakemanifold to the spark plug openings, ignition means carried by the lastmeans, a throttle valve for controlling the passage of fluid from thecarburetor to the intake manifold, av second throttle valve in thesubsidiary intake manifold, means operatively connecting the twothrottle valves for eect-ing simultaneous operation of the two,`and anair valve associated with the subsidiary intake manifold for controllingthe supply of air to the latter.

3. An attachment of the character described comprising a manifold,branch pipes connected to one end of the manifold, pipe extensionsconnected to the branch pipes, valves within the pipe extensions toallow the passage of fluid outwardly of the pipe extensions, gasignition means carried by the pipe extensions, a throttle valve withinthe manifold, an air port formed in the intake manifold, and a valve forcontrolling said port. v

lln testimony whereof ll have signed my name to this specification.

GEORGE ll. ALLEN.

ltlii

